Originally Posted by
Malicioso
Yeah I have heard stories of that happening, with the one near my area it's all fine, my missus commented that she's filled up with some V-power from near her work and it ran fairly good, then filled up with Ultimate at the servo near our house and felt even better, so IMO that BP churns out good batches.
What can often happen is that either the batch is off or the under ground storage tanks are near their "use by date", working in a petrochemical engineering firm as a piping and mechanical designer in my previous work, the storage vessels will sometimes have to be decommissioned and either replaced or treated (cleaned up)...
I worked in such particular project on an onshore site where that was the case, and you will also notice a few servos being teared down for this same reason, and of course for renovations...